/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.catalina.tribes.test.transport;

import java.io.InputStream;
import java.math.BigDecimal;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.DecimalFormat;

import org.apache.catalina.tribes.transport.Constants;

public class SocketReceive {
    static long start = 0;
    static double mb = 0;
    static byte[] buf = new byte[8192 * 4];
    static boolean first = true;
    static int count = 0;
    static DecimalFormat df = new DecimalFormat("##.00");
    static BigDecimal total = new BigDecimal(0);
    static BigDecimal bytes = new BigDecimal(32871);


    public static void main(String[] args) throws Exception {

        try (ServerSocket srvSocket = new ServerSocket(9999)) {
            System.out.println("Listening on 9999");
            Socket socket = srvSocket.accept();
            socket.setReceiveBufferSize(Constants.DEFAULT_CLUSTER_MSG_BUFFER_SIZE);
            InputStream in = socket.getInputStream();
            Thread t = new Thread() {
                @Override
                public void run() {
                    while (true) {
                        try {
                            Thread.sleep(1000);
                            printStats(start, mb, count, df, total);
                        } catch (Exception x) {
                            // Ignore
                        }
                    }
                }
            };
            t.setDaemon(true);
            t.start();

            while (true) {
                if (first) {
                    first = false;
                    start = System.currentTimeMillis();
                }
                int len = in.read(buf);
                if (len == -1) {
                    printStats(start, mb, count, df, total);
                    System.exit(1);
                }
                if (bytes.intValue() != len) {
                    bytes = new BigDecimal((double) len);
                }
                total = total.add(bytes);
                mb += ((double) len) / 1024 / 1024;
                if (((++count) % 10000) == 0) {
                    printStats(start, mb, count, df, total);
                }
            }
        }
    }

    private static void printStats(long start, double mb, int count,
                                   DecimalFormat df, BigDecimal total) {
        long time = System.currentTimeMillis();
        double seconds = ((double) (time - start)) / 1000;
        System.out.println("Throughput " + df.format(mb / seconds) +
                " MB/seconds messages " + count + ", total " + mb +
                " MB, total " + total + " bytes.");
    }
}